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A civil engineer must design a wheelchair accessible ramp next to a set of steps leading up to a building. The height from the ground to the top of the stairs is 2 ft. Based on ADA codes, the slope must be 1:12 or less. What is the ideal mechanical advantage of the ramp?
the girl at C stands pulls the rope horizontally at a constant speed of 6 ft/s. determine how fast the boat approcahes the pier at the instant the rope lenght AB is 50 ft.
a 2mm diameter metor of specific gravity 2.9 has a speed of 6 kms at an altitude of 50000m where the density of air is
an inward radial flow turbine is to develop 400 hp when supplied with air at 800c and 3 bar abs the exhaust total
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
a well insulated turbine operating at steady state develops 28mw for a system with flow rate of 50 kgs. the superheated
there is flow between two plates as shown in the schematic. the bottom plate is stationary. the top plate is moving at
a wet compression refrigeration cycle uses hfc-134a as the working fluid and operates between 75 f and 8 f. use a mass
a car air conditioning system operates with r-134a in the peak summer outside at 100degf and inside desired at 77degf.
a contractor is required to prepare a soil surface so that its planar and the normal direction to the surface is within
consider a pefc operating with the following specifications 80 and the pressure is 2 atm at the anode and 20 and the
a rigid tank with a volume of 25 m3 contain 15 kg of saturated liquid-vapor mixture of water at 75 ordm c. now the
the suspended load exerts a force F=600 lb at A, and the weight of the bar OA is negligible. Determine the tensions at the cables and the reactions at the ball and socket support O
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